Performance Improvement of GaAs Solar Cells Using Photoelectrochemical Oxidation Method

• Main Authors: Chun-Yen Tseng, 曾俊硯
• Other Authors: Ching-Ting Lee
• Format: Others
• Language: en_US
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/54392231118945623884

碩士 === 國立成功大學 === 光電科學與工程研究所 === 97 === The purpose of this research is to investigate the passivation mechanism of the window layer (AlGaAs) of GaAs solar cell by using photoelectrochemical oxidation method (PEC). The advantage of this passivation method is using its self-oxidation material to reduce the energy loss from the surface states on the window layer. The conversion efficiency of the GaAs solar cell with and without photoelectrochemical oxide treatment would be investigated. The conversion efficiency can be improved due to the reduction of surface state densities. Furthermore, in order to reduce the losses from the solar reflection, double anti-reflection coating was fabricated by electron-beam deposition system. In our research, the conversion efficiency was improved to 15.7% by using the photoelectrochemical oxidation method.